George M. Dallas
Vice President
Mayor of Philadelphia from 1828 to 1829 who was the eleventh Vice President of the United States from 1845 to 1849, under President James K. Polk. He was also a US Senator from Pennsylvania from 1831 to 1833.
Elected on the same ticket as Polk, he acted in the Senate to cast the tie-breaking vote to overturn a protective tariff.
The county of Dallas, in Texas - as well as Dallas counties in Iowa and Missouri - were named after him.
His father Alexander Dallas was Secretary of the Treasury under President James Madison.
He had a longtime rivalry with James Buchanan, from his days in Philadelphia government to the administration of James K. Polk.